diff --git a/src/connection_pool.c b/src/connection_pool.c
index 804b181..39dfc25 100644
--- a/src/connection_pool.c
+++ b/src/connection_pool.c
@@ -33,6 +33,14 @@ int conn_pool_init_ex(ConnectionPool *cp, int connect_timeout, \
 	return hash_init(&(cp->hash_array), simple_hash, 1024, 0.75);
 }
 
+int conn_pool_init(ConnectionPool *cp, int connect_timeout,
+	const int max_count_per_entry, const int max_idle_time)
+{
+    const int socket_domain = AF_INET;
+    return conn_pool_init_ex(cp, connect_timeout, max_count_per_entry,
+            max_idle_time, socket_domain);
+}
+
 int coon_pool_close_connections(const int index, const HashData *data, void *args)
 {
     ConnectionManager *cm;
diff --git a/src/connection_pool.h b/src/connection_pool.h
index 4358b18..ac0d070 100644
--- a/src/connection_pool.h
+++ b/src/connection_pool.h
@@ -84,13 +84,8 @@ int conn_pool_init_ex(ConnectionPool *cp, int connect_timeout,
 *      max_idle_time: reconnect the server after max idle time in seconds
 *   return 0 for success, != 0 for error
 */
-static inline int conn_pool_init(ConnectionPool *cp, int connect_timeout,
-	const int max_count_per_entry, const int max_idle_time)
-{
-    const int socket_domain = AF_INET;
-    return conn_pool_init_ex(cp, connect_timeout, max_count_per_entry,
-            max_idle_time, socket_domain);
-}
+int conn_pool_init(ConnectionPool *cp, int connect_timeout,
+	const int max_count_per_entry, const int max_idle_time);
 
 /**
 *   destroy function